Tom Holland, newly minted Spider-Man and Marvel gatekeeper, is so determined to keep movie spoilers from leaking that he shared video of himself burning his script for Avengers: Infinity War.

“Rule number one… hand in your script,” the actor captioned a post on Instagram. “Marvel [would] like to keep everything a secret,” he said in the video. “So, to all the producers who are probably freaking out because I forgot to hand in my script, here is evidence that I am destroying it.”

After filming his headlining role in Spider-Man: Homecoming (hitting theaters this July 7), Holland is currently working on Avengers: Infinity War at Pinewood Studios in Atlanta. In a video featurette posted online near the start of production, he was spotted next to Robert Downey Jr. (Iron Man) and Chris Pratt (Star-Lord), confirming the Avengers will meet the Guardians of the Galaxy and the Mad Titan Thanos (Josh Brolin).

Watch Holland’s video below.

When Holland was just a cameo in Captain America: Civil War, he told SiriusXM’s Entertainment Weekly Radio that he didn’t even want to read the rest of the script for fear of spoiling something important in interviews. “[Marvel] offered for me to read the script, and I said ‘No, I don’t want to read it,’ because I’ll be doing all these interviews and I’ll end up telling secrets and stuff,” he said. “I’ve got such a big mouth. So I actually don’t know what it’s about.”

Mike Colter, who plays Marvel’s Luke Cage in the eponymous Netflix series, previously joked that he learned his character “three lines at a time” because of the tight secret-keeping process.

“After a while they started putting [the scripts] in a computer,” he told Conan O’Brien. “So if you want to do something you have to put your fingerprint on there, you had to put a little swab of your saliva in the thing…I mean, that’s what you have to do to get the computer to open up, and then you leave it for 10 seconds, it closes again and you gotta do the thing all over again.”